Water-jacket for engine-cylinders.



E. B. PARKHURTI WATER JACKET FOR ENGINE CYLINDERii APPL'IGATION FILED MAY 1, 1907.

952,576. I Patented Mar. 22, 1910.

EDWARD B. PARKHURST, OF MOLINE, ILLINOIS.

WATER-JACKET FOR ENGINE-CYLINDERS.

Specification of Letters Patent.

Patented Mar. 22, 1910.

Applicationhled May 1, 1907. Serial No. 371,340.

To all whom it may concern:

Be it known that l, EnwAnn B. Prime 'l-IURST, residing in Moline, in the county of Rock island and State of Illinois, have invented new and useful Improvements in Water Jackets for Engine Cylinders, of which the following is a description, reference being had to the accompanying; drawings, which are a part of this specification.

My invention has relation to improvements in water jackets for engine cylinders, more e'speciaily intended, although not necessarily, as water jacket for the cylinders of an explosive engine.

It is the primary object of my invention to provide an improved form of water jacket, cast separate from the cylinder, or separate from a plurality of cylinders, and

1 when adjusted forming a cooling chamber 3, 3 indicate the engine cylinders.

around the sides of the cylinder or cylinders and around the explosive ends thereof, in combination with the cylinder head or heads, and means for readily detaching said jacket and cylinder head or heads with the expenditure of the slightest possible trouble and loss of time.

With the above primary object, and other incidental objects, in View, the invention consists of the devices and parts, or the equivalents thereof, as hereinafter more fully set forth.

In the drawings, Figure 1 is a vertical, sectional View through a fragment of the cylinders of a two cylinder explosive engine, showing clearly my invention in connection therewith; and Fig. 2 isa plan view of the construction illustrated in Fig. 1.

Referring to the drawings, the numerals In one of these cylinders'is shown the usual piston 4, and the piston rod 5 extending therefrom.

The other cylinder, of course, is likewise provided with a similar piston and piston rod (not shown). The water jacket is ap plied around the explosive ends of the cylinders, and the wall 6 of said explosive ends is provided therearound with a ledge 7. The cylinder heads 8, 8 are in the form of inverted cups having their lower ends threaded to adapt them to be screwed into threaded openings 9, 9 in the tops of the'cylinders. These cylinder heads are provided with flanges 10, 10, located a short distance above their lower ends, and these flanges when the heads are turned into the threaded openings, are adapted to be. brought firmly against the tops of the cylinders, packings 11, 11 being preferably interposed between the tops of the cylinders and the under sides of said flanges.

The top of each cylinder head is provided with two threaded openings into which are adapted to be screwed the usual spark plug 12 and relief cock 13. The shell 14 is prefcrably of aluminum, and in'conjunction with the wall which i'ncloses the explosive ends of the cylinders, forms the water jacket. This shell is cast separatefrom said wall of the water jacket and is so shaped as to form top portion and a depending portion, the lower end of the latter fitting on the ledge 7, with a packing 15 preferably fitted between the two. jacket shell is provided with two openings 16, 1.6 through which the cylinder heads 8 extend. The upper ends of the cylinder heads above the upper portion of the water jacket shell are threaded to take thereon lock nuts 17 17 which are turned down tightly against the upper portion of the shell, and preferably against packings 18, 1.8.

The water jacket shell, it will be seen, is so shaped as to leave a water space 19 between its inner side and the outer side of the wall forming the cylinders, a water inlet pipe 20 leading to the upper portion of this space and a water outlet pipe 21 leading from one side of the water jacket.

In order to adapt my invention to an engine having more than two cylinders, all that will be required will be to enlarge the size. of said shell, and provide additional openings for the extra cylinder heads.

From the foregoing description, it is thought that the construction and operation of my invention will be readily understood.

It will be seen that the construction is such that the entire shell is held firmly in place by simply employing lock nuts, which, in connection with the cylinder heads, serve to bind the shell firmly to the wall of the cylinder, and at the same time permit of the ready removal of theshcll and cylinder heads whenever desired for cleaning purposes, or for any other purpose.

While I have hereinbefore set forth that the cooling chamber is adapted to receive water therein as the cooling medium, yet

The upper portion of the water it will be understood that any other desired cooling fluid ma be introduced into the chamber and disc iarged therefrom;

\Vhat I claim as my invention is:

1. The combination with the outer wall of an engine cylinder, said wall provided therearound with an outstanding ledge, a cylinder head having its inner end screw-threaded and engaging a threaded opening in the explosive end of the wall of the engine, and said head provided with an outstanding flange adapted, when the head is turned into the opening in the end of the cylinder wall, to be brought into contact with said end of the wall, an outer shell surrounding the cylinder wall at the explosive end thereof, and cast separate from the wall, and spaced a desired distance therefrom to form a cooling chamber, the inner end of said shell bearing on but unconnected to the outstanding ledge ot' the cylinder wall, and the outer end of the shell being in the form of a dome spaced a distance from the end of the cylinder wall, and thereby forming a continuation of the cooling chamber over the end of said wall, the said end of the shell provided with an opening through which the cylinder head passes. a, nut turned on to the outer threaded end of the head and against the end of the shell, and an inlet pipe for the cooling medium. said pipeleading into the cooling chamber.

2. The combination with a Wall partitioned to form a plurality of cylinders, said the cylinder walls, an outer shell surround-' ing the wall forming the cylinders atthe explosive ends of the cylinders, and cast separate from said wall, and spaced a desired distance therefrom to form a cooling chamber, the inner end of said shell bearing against butunconnected to the outstanding ledge of 'the cylinder walls, and the outer end of the shell being in the form of a dome spaced a distance from the ends of the cyl inder walls, and thereby forming a continuation of the cooling chamber over said ends ofthe walls, the said end of the shell provided with openings through which the cylinder heads pass, nuts turned on to the outer threaded ends of the heads and against the. end of the shell, and inlet pipes for the cooling medium, said pipes leading into the cooling chamber. 7

In testimony whereof, I aflix my signature, in pr'esencepf two witnesses.

EDWARD B. PARKHURST.

Witnesses:

GEO. A. TOWNSEND, Jr.. MARTIN N. JoIINsoN. 

